The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, where α is the nozzle exit flow angle, if the Options: A . &nbspBlade velocity coefficient is unity B . &nbspBlade solidity is 0.65 C . &nbspBlades are equiangular and frictionless D . &nbspBlades are equiangular

The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, w

Question

The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, where α is the nozzle exit flow angle, if the

Options:

A . Blade velocity coefficient is unity

B . Blade solidity is 0.65

C . Blades are equiangular and frictionless

D . Blades are equiangular

Answer: Option C

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